TABLE 1 – first stage pipe sizing

 

 

PROPANE GAS

10 PSIG Inlet with a 1 PSIG Pressure Drop

 

 

 

 

 

 

 

 

 

Maximum capacity of pipe or tubing, in thousands of BTU/hr. of L.P. Gas

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Size of Pipe

 

 

 

 

LENGTH OF PIPE OR TUBING, FEET*

 

 

 

Or Copper

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tubing, Inches

1 0

2 0

3 0

 

4 0

5 0

6 0

7 0

 

 

8 0

9 0

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3/8

558

383

309

 

265

235

213

196

 

 

182

171

161

Copper

½

1387

870

700

 

599

531

481

443

 

 

412

386

365

Tubing

5/8

2360

1622

1303

 

1115

988

896

824

 

 

767

719

679

(O.D.)

¾

3993

2475

2205

 

1887

1672

1515

1394

 

1297

1217

1149

 

½

3339

2295

1843

 

1577

1398

1267

1165

 

1084

1017

961

Pipe

¾

6982

4799

3854

 

3298

2923

2649

2437

 

2267

2127

2009

Size

1

13153

9040

7259

 

6213

5507

4989

4590

 

4270

4007

3785

 

1-1/4

27004

18560

14904

12756

11306

10244

9424

 

8767

8226

7770

 

1-1/2

40461

27809

22331

19113

16939

15348

14120

 

13136

12325

11642

 

2

77924

53556

43008

36809

32623

29559

27194

 

25299

23737

22422

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

125

150

175

 

200

225

250

275

 

 

300

350

400

 

3/8

142

130

118

 

111

104

9 0

8 9

 

 

8 9

8 2

7 6

Copper

½

323

293

269

 

251

235

222

211

 

 

201

185

172

Tubing

5/8

601

546

502

 

467

438

414

393

 

 

375

345

321

(O.D.)

¾

1018

923

843

 

790

740

700

664

 

 

634

584

543

 

½

852

772

710

 

660

619

585

556

 

 

530

488

454

Pipe

¾

1780

1613

1484

 

1381

1296

1224

1162

 

1109

1020

949

Size

1

3354

3039

2796

 

2601

2441

2305

2190

 

2089

1922

1788

 

1-1/4

6887

6240

5741

 

5340

5011

4733

4495

 

4289

3945

3670

 

1-1/2

10318

9349

8601

 

8002

7508

7092

6735

 

6426

5911

5499

 

2

19871

18005

16564

15410

14459

13658

12971

 

12375

11385

10591

*Total length of piping from outlet of first stage regulator to inlet of second stage regulator (or to inlet of second stage regulator furthest away).

Notes: 1) To allow 2 PSIG pressure drop, multiply total gas demand by .707, and use capacities from table.

2)For different first stage pressures, multiply total gas demand by the following factors, and use capacities from table.

First State Pressure PSIG

Multiply by

 

2 0

.844

 

2 1

.912

Data Calculated per NFPA #54 & 58.

TABLE 4 – Second, Single, or Integral Twin Stage Pipe Sizing

11 Inches Water Column Inlet with a ½ Inch Water Column Drop

Maximum capacity of pipe or tubing in thousands of BTU/hr of LP-Gas

PROPANE GAS

Size of Pipe

 

 

LENGTH OF PIPE OR TUBING, FEET*

 

 

 

 

Or Copper

 

 

 

 

 

 

 

 

 

 

 

 

Tubing, Inches

1 0

2 0

3 0

4 0

5 0

6 0

 

7 0

8 0

9 0

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3/8

4 9

3 4

2 7

2 3

2 0

1 9

 

 

Copper

1/2

110

7 6

6 1

5 2

4 6

4 2

 

3 8

3 6

3 3

3 2

 

Tubing

5/8

206

141

114

9 7

8 6

7 8

 

7 1

6 7

6 2

5 9

 

(O.D.)

3/4

348

239

192

164

146

132

 

120

113

105

100

 

 

7/8

536

368

296

253

224

203

 

185

174

161

154

 

 

1/2

291

200

161

137

122

110

 

102

9 4

8 7

8 4

 

Pipe

3/4

608

418

336

287

255

231

 

212

198

185

175

 

Size

1

1146

788

632

541

480

435

 

400

372

349

330

 

 

1-1/4

2353

1617

1299

1111

985

892

 

821

764

717

677

 

 

1-1/2

3525

2423

1946

1665

1476

1337

 

1230

1144

1074

1014

 

 

2

6789

4666

3747

3207

2842

2575

 

2369

2204

2068

1954

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

125

150

175

200

225

250

 

275

300

350

400

 

 

3/8

 

 

Copper

1/2

 

 

Tubing

5/8

 

 

(O.D.)

3/4

 

 

 

7/8

 

 

 

1/2

7 4

6 7

6 2

5 8

5 4

5 1

 

4 8

4 6

4 3

4 0

 

Pipe

3/4

155

141

129

120

113

107

 

101

9 7

8 9

8 3

 

Size

1

292

265

244

227

213

201

 

191

182

167

156

 

 

1-1/4

600

544

500

465

437

412

 

392

374

344

320

 

 

1-1/2

899

815

749

697

654

618

 

587

560

515

479

 

 

2

1731

1569

1443

1343

1260

1190

 

1130

1078

992

923

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Total length of piping from outlet of regulator to appliance furthest away.

 

Data Calculated per NFPA #54 & 58.

Page 8

Page 8
Image 8
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